Apparently the british government have determined that there are nine types of drinker – excerpt from the BBC website:

Drinkers fall into ‘nine groups’
The government believes it has identified nine types of heavy drinker as it launches a new alcohol campaign.
Department of Health research with focus groups found heavy drinkers often fell into one of a number of categories.
These ranged from de-stress and depressed drinkers to people who boozed because of boredom or to bond.
Experts said helping people to understand the reasons for their drinking habits was “very useful”.